FISHERY BULLETIN: VOL. 72, NO. 3 



Measurements taken included 18 characters for 

 mature males, 21 for mature females (Figures 1, 

 2). These characters comprise two sets, one as- 

 sociated with the carapace or general body form, 

 and another with sexual characters. Measure- 

 ments for both sexes included: 



1. Length of carapace including epistomial 

 spine. 



2* Length of carapace excluding epistomial 

 spine. 



3.* Width of carapace including lateral 

 spines. 



4* Width of carapace at base of notch be- 

 tween lateral spine and preceding an- 

 terolateral tooth. 



5.* Width between tips of outer orbital 

 spines (first anterolateral teeth). 



6. Width between tips of suborbital spines. 



7. Width between tips of lateral interorbit- 

 al spines. 



8.* Maximum height of body. 



9.* Anterior width of metagastric area. 



Posterior width of metagastric area. 



Length of metagastric area. 



Angular (lateral) length of metagastric 



area. 



10.* 

 11.* 

 12.* 



Measurements of elements in the T-shaped 

 male abdomen included: 



13. 

 14. 

 15. 

 16. 



17.* 

 18.* 



Greatest width of fused segments 3-5. 

 Median length of fused segments 3-5. 

 Median length of narrow segment 6. 

 Narrowest width of narrow segment 6. 

 Length of telson. 

 Width of telson. 



Figure 2. — Composite ventral view of thoracic sternites (roman numerals), abdomen (arabic numerals), and telson (T) in situ, a, 

 mature male; b, mature female; c, immature female. Measurements: lengths in midline, widths maximal for structure. 



690 



